Hi pdf. I'm not sure on the g1 question.. As I'm more self taught... I have removed the centre tap from the heaters and connected it to the same as the 0v from dog house to the power tx. The pots do...

Thanks for that. The cap on the bias pot I added an extra 10 uf as I could see a little ripple. The main cap is 100uf 100v. Fitting the 10uf made no difference. I will look at it tomorrow and do the...